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Silicon Nitride Powder

Product	Silicon Nitride Powder
Colour	Grey White Powder, α phase
Purity	≥99%, ≥99.9%, ≥95% (Other purities are also available)
Particle size	1-5 µM, 10-53 µM (Can be customized), Ask for other available size range.
Ingredient/MF	α-Si₃N₄
Product Code	NCZ-CN-146/20
CAS Number	12033-89-5

Silicon Nitride Powder

Brief Description of Silicon Nitride Si3N4 Powder

Silicon nitride is a chemical compound of the element’s silicon and nitrogen.

Si3N4 is the most thermodynamically stable of the silicon nitrides.

Hence, Si3N4 is the most commercially important of the silicon nitrides and is generally understood as what is being referred to where the term “silicon nitride” is used.

It is a white grey, high-melting-point solid that is relatively chemically inert, being attacked by dilute HF and hot H2SO4

It is very hard (8.5 on the Mohs scale).

Color depends on the type and particle size.

Application of Silicon Nitride Si3N4 Powder

1) Metallurgy, chemical industry, machinery, aviation, aerospace, and energy industries to use the ball and roller bearing, sliding bearing, sleeve, valve, and a wear-resistant, high temperature, corrosion-resistant structural components required.

2) Surface treatment of metal and other materials: such as molds, cutting tools, turbine blades, turbine rotor, and the cylinder wall coatings.

3) Composite materials: such as metals, ceramics and graphite composites, rubber, plastics, coatings, adhesives and other polymer-based composites.

4) The color less, transparent self-lubricating wear-resistant nano-particle films for mobile phones, cars, and other advanced surface protection.

5) Ball bearings

6) Ball valves and parts

7) Corrosion-resistant turbine

8) Cutting tools Grinding wheels

9) Insulating parts

10) Spray nozzles (for rockets) 1

11) Spray pipe (for missiles)

12) Strengthening materials (for Al etc)

13) Wear parts

Please email us for the customization.

Email: contact@nanochemazone.com

Please contact us for customization and price inquiry

Note: We supply different size ranges of Nano and micron as per the client’s requirements and also accept customization in various parameters.

Silicon Nitride (Si₃N₄) Powder – CAS 12033-89-5

Introduction to Silicon Nitride (Si₃N₄) Powder

Silicon Nitride (Si₃N₄) is a high-performance white to gray crystalline powder with a melting point of 1900 °C and a density of 2.2–3.5 g/cm³. It exists in two crystalline forms: α-Si₃N₄ (hexagonal structure) and β-Si₃N₄ (crystalline structure). The material exhibits exceptional hardness, high-temperature stability, and resistance to oxidation, making it one of the most important structural ceramics available today.

When pure, Si₃N₄ appears white; impurities or excess silicon can cause a gray coloration.

Physicochemical Properties of Silicon Nitride (Si₃N₄) Powder

Chemically stable and insoluble in water.
Hydrolyzes slowly in strong acids, producing ammonium salts and silicon dioxide.
Soluble in hydrofluoric acid, resistant to dilute acids.
Corroded slowly by strong alkalis; molten alkalis rapidly convert it to silicates and ammonia.
At >600 °C, can reduce metal oxides such as PbO, ZnO, and SnO₂, releasing nitrogen oxides.
Retains strength up to 1200 °C; decomposes only above 1900 °C.
Exhibits excellent corrosion resistance against most inorganic acids, alkalis, and organic acids.
Superior electrical insulation and mechanical strength at elevated temperatures.

Technical Specifications of Silicon Nitride (Si₃N₄) Powder

Property	Value
Other Names	Silicon (IV) nitride, α-Si₃N₄, SiN, Trisilicon tetranitride
CAS Number	12033-89-5
Chemical Formula	Si₃N₄
Molecular Weight	140.28 g/mol
Appearance	White to gray powder
Melting Point	1900 °C
Density	2.2–3.5 g/cm³
Solubility	Insoluble in water
Exact Mass	139.943 g/mol

Applications of Silicon Nitride (Si₃N₄) Powder

Industrial Applications

Mechanical Industry: Bearings, rollers, ball seats, cutting tools, pump plungers, spindle sealing materials.
Chemical Industry: Wear and corrosion-resistant parts (valves, pump components, filters, combustion systems).
Metallurgical Industry: Dies, extrusion and wire drawing tools, rolls, crucibles, liquid metal handling components.

High-Performance Applications

Automotive & Aerospace: Engine components, turbine blades, heat-resistant structural parts, improving efficiency and reducing fuel consumption.
Electronics: High-performance electrical insulation, substrates, semiconductor packaging.
Military & Nuclear: High-strength, corrosion-resistant components under extreme conditions.

Silicon nitride ceramics are particularly valued for resistance to thermal shock—withstanding rapid heating and cooling cycles above 1000 °C without fracturing.

Main Supplier of Silicon Nitride (Si₃N₄) Powder

Nanochemazone™ is a trusted global supplier of advanced materials, specializing in high-purity powders, nanomaterials, and functional ceramics. With extensive expertise in research and industrial supply, we provide Silicon Nitride (Si₃N₄) Powder with guaranteed quality, consistency, and global shipping support.

If you are looking for high-quality Silicon Nitride (Si₃N₄) Powder, please contact us for bulk pricing, technical datasheets, or custom specifications.

✅ CAS No.: 12033-89-5
✅ Formula: Si₃N₄
✅ High-performance structural ceramic
✅ Available in research & industrial grades

Description

Note: For pricing & ordering information, please contact us at sales@nanochemazone.com
Please contact us for quotes on Larger Quantities and customization. E-mail: contact@nanochemazone.com

Customization:

If you are planning to order large quantities for your industrial and academic needs, please note that customization of parameters (such as size, length, purity, functionalities, etc.) is available upon request.

NOTE:

Images, pictures, colors, particle sizes, purity, packing, descriptions, and specifications for the real and actual goods may differ. These are only used on the website for the purposes of reference, advertising, and portrayal. Please contact us via email at sales@nanochemazone.com or by phone at +1-780-612-4177 if you have any questions.

FAQs

Q1: What is Silicon Nitride Powder and what are its common applications?

Silicon Nitride Powder is a high-performance advanced ceramic material known for its excellent mechanical strength, thermal shock resistance, and chemical stability. It is widely used in bearings, cutting tools, automotive components, turbine parts, electronics, and advanced engineering ceramics due to its exceptional durability and high-temperature performance.

Q2: What are the key properties of Silicon Powder?

Silicon Powder exhibits high thermal stability, semiconductor behavior, good electrical conductivity (in doped forms), and compatibility with other materials. These characteristics make it ideal for semiconductor fabrication, solar photovoltaic applications, metallurgical additives, and chemical synthesis.

Q3: Is Silicon Powder suitable for electronics and solar applications?

Yes, Silicon Powder is extensively used in electronics, semiconductor devices, and solar photovoltaic (PV) cells. Its high purity and controlled particle size support consistent performance in microelectronic fabrication, silicon wafer production, and energy-related applications.

Q4: What particle sizes and purity levels are available for Silicon Powder?

Silicon Powder is available in various fine particle size ranges and high purity grades, depending on the intended application. Typical particle sizes support semiconductors, solar applications, coatings, metallurgical additives, and research uses. Custom sizes and formulations can also be provided based on specific technical needs.

Q5: How should Silicon Powder be stored and handled to maintain quality?

Silicon Powder should be stored in a cool, dry, well-sealed environment, protected from moisture, contamination, and direct sunlight. Proper handling and packaging ensure that the powder maintains its physical properties, high purity, and performance stability during storage and processing.

Important Notes

Research Use Only: Nanochemazone materials are intended strictly for research and development purposes in laboratory and industrial settings.
No Refunds or Exchanges: All sales are final. Nanochemazone does not permit exchanges or offer refunds under any circumstances.
Customs & Import Responsibilities: Customs clearance, duties, taxes, and tariffs are the sole responsibility of the consignee/importer. Nanochemazone is not liable for delays, rejections, or any additional costs incurred during the customs process, and such issues will not justify order cancellations or refunds.
Order Cancellations: Once an order is placed, it cannot be cancelled. No refunds will be issued for cancelled or undelivered orders.
Indemnification: The buyer agrees to indemnify and hold harmless Nanochemazone, its affiliates, and personnel from any claims, damages, liabilities, or expenses arising from the use of its products or services.
Terms & Conditions: All orders and communications are subject to Nanochemazone’s standard Terms & Conditions.